Gas water heater



V. MAUCK.

GAS WATER HEATER.

APPLICATION FILED JULY 9. 1921.

Patented May 16, 1922.

2 SHEETS-SHEET 1.

A u w INVENTOR:

V. MAUCK.

GAS WATER HEATER.

APPLICATIONFILED JULY 9. 1921.

1 %16 %8? Patented May 16, 1922.

2 SHEETS-SHEET 2.

HGE

INVENTOR;

names are VICTOR MAUCK, OF NORRISTOWN. PENNSYLVANIA.

GAS WATER HEATER.

Application filed July 9, 1921.

' State of Pennsylvania, have invented a cer-' tain new and useful Improvement in Gas IVater Heaters, whereof the following is a specification, reference being had to the accompanying drawings.

My invention relates to gas water heaters of the type known to the trade as automatic combination range boilers and including a cylindrical casing for the gas burner, which casing is partitioned above the burner to form a water tank with a central flue for products of combustion from said burner, and having a valve for the gas supply con trolled by a thermostat extending in the water tank, so that the flow of gas to the burner is controlled in accordance with the temperature of the water heated by the burner.

However, as hereinafter described, my in vention relates more particularly to the construction and arrangement of said casing, which is termed the boiler shell.

My invention includes the various novel features of construction and arrangement hereinafter more definitely specified. However, the specific form of container herein disclosed is claimed in my copending application Serial No. 512,763, filed November 4, 1921, for Letters Patentof the United States.

In said drawings: Fig. I is a diagrammatic perspective view of an automatic combination range boiler and gas water heater embodying my invention.

Fig. II is a plan view of the boiler shell indicated in Fig. I.

Fig. III is a front elevation of such a boiler shell.

Fig. IV is a vertical central sectional view of the boiler shell shown in Fig. III.

Fig. V is a transverse plan sectional view, taken on the'line V in Figs. III and IV.

Fig. VI is a transverse plan sectional view, taken on the line VI in Figs. III and IV.

In said figures; the cylindrical tubular casing shell 1 has the door opening 2 in its circumference. near the lower end thereof. The outwardly projecting circumferential bead 3 is formed in said shell above said opening. The two outwardly projecting circumferential beads 5 and (3 are formed in Specification of Letters Patent.

Patented May 16, 1922.

Serial No. 483,449.

said shell below said opening, and the longitudinal beads 7 at opposite sides thereof: whereby said shell is reinforced at said opening, without the employment of the separate auxiliary stiffening plates or rings, which are characteristic of devices of the prior art. Consequently, the required degree of stiffness of said shell, at the region of the doorway 2, is secured at less cost than by the employment of such auxiliary devices.

The cylindrical tubular flue 8 extends in coaxial position in'said shell 1, the full length of the water compartment 9, which compartment is formed between said shell 1 and flue 8. Said water compartment is closed at the top end of said shell by the upwardly convexed head 10 having the downwardly extending cylindrical flange 11 fitting in said shell. Said water compartment 9 is closed, intermediate of the length of said shell 1, by the downwardly convexed partition 13 having the downwardly extending cylindrical flange 14 fitting in said shell, adjacent to said upper head 3. The burner compartment 16 in said shell, which is primarily open at the bottom thereof. as indicated in Fig. IV, is formed by the skirt portion 17 of said shell, extending below said partition 13 and including said door opening 2. Flat places 20 and 21 are formed in said shell, interrupting the normally cylindrical configuration thereof, as shown in Figs. IV and V. It may be observed that said two fiat places 20 and 21 extend in a commonplane which is tangential to a circle 22 concentric to the axis of said shell 1 and fine 8. but of a diameter intermediate of the diameters of said shell and flue, for the purpose hereinafter described. Three flat places 23. 2a and 25 are formed in said head 10, which are in a common plane interrupting the normal convex configuration of said head, as indicated in Fig. IV, at right angles to the axis of said shell 1 and flue 8. One flat place 26 is formed in said partition 13, in a plane at right angles to the axis of said shell 1 and flue 8, interrupting the normal convex configuration of said partition. as indicated in Fig. IV. Six similar pipe spuds 27 are re spectively secured at said six flat places formed in said shell, head. and partition.

All of the parts above described are assembled in'integral relation. conveniently by welding them together, by means of an oxyacetylene burner, and such shells with the integral appurtenances above described are articles of commerce, independently of such equipment as may be applied theret to form a gas water heater.

However, I have shown in Fig. I, a convenient embodiment of such an article of manufacture as a combination range boiler and gas water heater. In that figure; said shell 1 is provided with the door frame 30 rigidly connected therewith in registry with said opening 2, between said reinforcing beads 3 and 5. Said frame 30 has the door 31 hingedly connected therewith by the pintle .32 extending through opposed lugs on said frame and door. The bottom of said shell 1, which is primarily open as best shown in Fig. IV, is arranged to be closed by the diaphragm 33 at the top of the supporting stand 34, which stand is conveniently provided with three legs 35, and the shell holding flange 36.

As shown in Fig. I; cold water is supplied. to said water compartment 9 through the inlet pipe 37 and passes downward through the spud at 26 to the water spreader 38 where it is instantly heated and rises upwardly through the pipe 39 which extends in said flue 8 in coaxial relation with said shell 1, but branches outwardly through the vent pipe 40 into the Y fitting 41 which has branches connected with the spuds at 24 and 25 and is'connected with the pipe 43, leadingto the hot water faucets or other dispensing fixtures. Under ordinary conditions, the auxiliary burner 45 furnishes ample heat for said water spreader 38; getting its supply of gas through the by-pass 46. However, when cold water is caused to enter said compartment 9, by drawing off hot water through said pipe 43, the thermostatic valve 48 opens automatically and gas is delivered through the pipe 49 to the burner 50 and ignited by said auxiliary burner 45. When the water is restored to the temperature for which said automatic valve 48 is set, for instance, 130 Fahrenheit, said valve 4C8 automatically closes, extinguishing said main burner 50, and remains closed until the next influx of cold water is caused by withdrawing hot water through said pipe 43.

.The thermostatic element 52,013 said valve 48, extends axially through the spud at 21;

its axis being indicated by the dash line in Fig. V, tangential to a circle concentric with the axis of said shell 1 and flue 8, and larger than the circumference of said flue, so that said thermostatic element 52 does not come in contact with said flue.

The spud indicated at 20 in Fig. IV may be used to connect said water compartment 9 to the water-back in a coal range or fur nace for winter operation, by means of the pipe 55; the other connection to said waterand that said doorway 2 is surrounded by r nses? back being made by the pipe 56 which extends through the side of said shell 1 in connection with said spreader 38, as indicated in Fig. I.

I have found it convenient to form such containers as indicated at 1, by cutting rectangular blanks from plane sheet metal; punching the doorway 2 therein and forming said reinforcements 3, 5, 6 and 7 by the same pressing operation, while the metal is flat; and thereafter rolling said blank to cylindrical form and uniting its longitudinal edges so as to form a seamless tube, to which the other parts above described are subsequently united so as to form the unitary sheet metal structure shown in Figs. II to VI inclusive. It may be observed that said reinforcements 3, 5, and 6 are annular with respect to the axis of that structure,

an annular reinforcement, of which the heads 3, 5 and 7 are components, as indicated in Fig. III. Moreover, it is to be noted that although when said beads are pressed in said plane sheet they are concavo-convex and extend straight in said, sheet; when said sheet is rolled to cylindrical form, said beads remain concavo-convex but then extend in toric form.

However, it is to be understood that my improvements, embodied in the container shown in Figs. II to VI inclusive, may be included in gas water heaters of other types than that shown in Fig. I, or in containers differing from that shown. Therefore, I do not desire to limit myself to the precise details of construction and arrangement herein set forth, as it is obvious that various modifications may be made therein, without departing from the essential features of my invention, as defined in the appended claims.

I claim 1.. In a gas water heater, the combination. with a cylindrical tubular casing shell, having a door opening in its circumference,near the lower end thereof; of an outwardly projecting circumferential bead formed in said shell above said opening, and two outwardly projecting circumferential beads formed in said shell below said opening, whereby said shell is reinforced at said opening; of a cylindrical tubular'flue in coaxial position in said shell; a water compartment formed between said shall and flue, closed at the top end of said shell by an upwardly convexed head, with a downwardly extending cylindrical flange fitting in said shell said water compartment bein closed intermediate of the length,of saif shell, by a downwardly convexed partition, with a downwardly extending cylindrical flange fitting in said shell, adjacent to said upper bead; a burner compartment in said shell, open the skirt elow said at the bottom thereof, formed b portion of said shell extendingb partition, and including said door opening; fiat places, formedin the curved walls of said shell, head, and partition; and pipe spuds respectively secured at said flat places; the axes of said spuds in said head and partition being parallel with the axis of said shell, and the axes of said spuds in said shell being in a plane at right angles to the axis of said shell; said spud axes being tangential to respective circles, concentric with said shell and flue axis, smaller in diameter than said shell, but larger in diameter than said flue; all of said elements bein welded in integral relation.

2. In a gas water heater, the combination with a cylindrical tubular casin shell, hav ing a door opening in its circum erence, near the lower end thereof; of an outwardly pro jecting circumferential bead formed in said shell above said opening, and an outwardly projecting circumferential bead formed in said shell below said opening, whereby said shell is reinforced at said opening; of a cylindrical tubular flue in coaxial position in said shell; a water compartment formed between said shell'and flue, closed at the top end of said shell by a head; said water compartment being closed intermediate of the length of said shell, by a partition; and a burner compartment in said shell, open at the bottom thereof, formed by the skirt portion of said shell extendin below said partition, and including said oor open-in flat places, formed in said shell, head, an partition; and pipe spuds respectively secured at said flat places, the axes of said spuds in said head and partition being parallel with the axis of said shell; the axes of said spuds in said shell being in a plane at right angles to the axis of said shell; said spud axes be- -in tangential to respective circles, concentrio with said shell and flue axis, smaller in diameter than said shell, but larger in diameter than said flue; all of said elements bein integrally connected.

3. n a as water heater, the combination with a cyllndrical tubular casin shell, having a door opening in its circum erence, near the lower end thereof; of an outwardly projecting circumferential bead formed in said shell above said opening, and an outwardly projecting circumferential bead formed in said shell below said opening, whereby said shell is reinforced at said. opening; 'of a cylindrical tubular flue in coaxial position in said shell; a water compartment formed between said shell and flue, closed at the top end of said shell by a head; said water compartment being closed intermediate of the length of said shell, by a partition; and a burner compartment in said shell, open at the bottom thereof, formed by the skirt portion of said shell extending below said'partition and including said door opening; flat places, formed in-said shell; and pipe said flue; all of said elements being integrally connected.

4.71m a gas water heater, the combination with a closed cylindrical tubular casing shell, having a door opening in its circumference, near one end thereof; of a circumferential bead formed in said shell above said opening, and two circumferential beads formed in said shell below said opening, whereby said shell is reinforced at said opening, each of said beads being concavoconvex and extending in toric form in said shell; of a cylindrical tubular flue in 00-,

axial position in said shell; a water compartment formed between said shell and flue, closed at the top end of said shell by a head; said Water compartment being closed intermediate of the, length of said shell, by a partition; and a burner compartment in said shell, open at the bottom thereof, formed by the skirt portion of said shell extending below said partition, and including said door opening.

5. In a gas water heater, the combination with a closed cylindrical tubular casing shell, having a door opening in its. circumference; of an outwardly projecting circumferential bead formed in said shell above said opening, and two outwardly projecting circumferential beads formed in said shell below said opening, whereby said shell is reinforced at said opening, each of said beads being concavo-convex and extending in toric form in said shell; of a cylindrical tubular flue in coaxial position in said shell; a water compartment formed between said shell and flue, closed at one end of said shellby ahead; said water compartment bein closed intermediate of the length of said s ell, by a par-f tition, adjacent to one of said beads"; and a burner compartment in said shell, open atthe bottom thereof, formed by the skirt portion of said shell extendin below said partition, and including said oor opening.

6. In a gas water heater, the combination with a closed cylindrical tubular casing shell, having a door opening-in its circumference, near one end thereof; ofa circum-- ferential bead formed in said shell above said opening, and a circumferential bead axial position in said shell; a water compartment formed between said shell and flue;- said watercompartment being closed intermediate of the length of said shell, by

a partition, fitting in said shell adjacent to said upper bead; and a burner compartment in said shell, open at the bottom thereof, formed by the skirt portion of said shell extending below said partition, and-including said door opening.

1 7. In a gas Water heater, the combination with a closed tubular casing shell, hav

ing a door opening in its circumference, near one end thereof; of a circumferential bead formed in said shell adjacent to said opening, whereby said shell is reinforced at said opening; said head extending in toric form in said shell; a tubular flue in coaxial position in said shell; a Water com-' VICTOR MAUCK.

lVitnesses:

MORRIS H. FELDNER, FRANK SUTOLIFFE. 

